package edu.xmut.yuepaibackend.utils;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.util.Objects;

/**
 * Redis自定义FastJson序列化器
 *
 * @author shuofeng
 */
public class FastJsonRedisSerializer<T> implements RedisSerializer<T> {
    private final Class<T> clazz;


    static {
        ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
    }


    public FastJsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }


    @Override
    public byte[] serialize(T t) throws SerializationException {
        if (Objects.isNull(t)) {
            return new byte[0];
        }
        return JSON.toJSONBytes(t, SerializerFeature.WriteClassName);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if (Objects.isNull(bytes) || bytes.length == 0) {
            return null;
        }
        return JSON.parseObject(bytes, clazz);
    }


}
